1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 #include <osl/diagnose.h>
25 #include <osl/interlck.h>
26
27 #include <rtl/byteseq.h>
28 #include <rtl/alloc.h>
29 #include <rtl/memory.h>
30
31 /* static data to be referenced by all empty strings
32 * the refCount is predefined to 1 and must never become 0 !
33 */
34 static sal_Sequence aEmpty_rtl_ByteSeq =
35 {
36 1, /* sal_Int32 refCount; */
37 0, /* sal_Int32 length; */
38 { 0 } /* sal_Unicode buffer[1]; */
39 };
40
41 //==================================================================================================
rtl_byte_sequence_reference2One(sal_Sequence ** ppSequence)42 void SAL_CALL rtl_byte_sequence_reference2One(
43 sal_Sequence ** ppSequence )
44 {
45 sal_Sequence * pSequence, * pNew;
46 sal_Int32 nElements;
47
48 OSL_ENSURE( ppSequence, "### null ptr!" );
49 pSequence = *ppSequence;
50
51 if (pSequence->nRefCount > 1)
52 {
53 nElements = pSequence->nElements;
54 if (nElements)
55 {
56 pNew = (sal_Sequence *)rtl_allocateMemory( SAL_SEQUENCE_HEADER_SIZE + nElements );
57
58 if ( pNew != NULL )
59 rtl_copyMemory( pNew->elements, pSequence->elements, nElements );
60
61 if (! osl_decrementInterlockedCount( &pSequence->nRefCount ))
62 rtl_freeMemory( pSequence );
63 }
64 else
65 {
66 pNew = (sal_Sequence *)rtl_allocateMemory( SAL_SEQUENCE_HEADER_SIZE );
67 }
68
69 if ( pNew != NULL )
70 {
71 pNew->nRefCount = 1;
72 pNew->nElements = nElements;
73 }
74
75 *ppSequence = pNew;
76 }
77 }
78
79 //==================================================================================================
rtl_byte_sequence_realloc(sal_Sequence ** ppSequence,sal_Int32 nSize)80 void SAL_CALL rtl_byte_sequence_realloc(
81 sal_Sequence ** ppSequence, sal_Int32 nSize )
82 {
83 sal_Sequence * pSequence, * pNew;
84 sal_Int32 nElements;
85
86 OSL_ENSURE( ppSequence, "### null ptr!" );
87 pSequence = *ppSequence;
88 nElements = pSequence->nElements;
89
90 if (nElements == nSize)
91 return;
92
93 if (pSequence->nRefCount > 1) // split
94 {
95 pNew = (sal_Sequence *)rtl_allocateMemory( SAL_SEQUENCE_HEADER_SIZE + nSize );
96
97 if ( pNew != NULL )
98 {
99 if (nSize > nElements)
100 {
101 rtl_copyMemory( pNew->elements, pSequence->elements, nElements );
102 rtl_zeroMemory( pNew->elements + nElements, nSize - nElements );
103 }
104 else
105 {
106 rtl_copyMemory( pNew->elements, pSequence->elements, nSize );
107 }
108 }
109
110 if (! osl_decrementInterlockedCount( &pSequence->nRefCount ))
111 rtl_freeMemory( pSequence );
112 pSequence = pNew;
113 }
114 else
115 {
116 pSequence = (sal_Sequence *)rtl_reallocateMemory(
117 pSequence, SAL_SEQUENCE_HEADER_SIZE + nSize );
118 }
119
120 if ( pSequence != NULL )
121 {
122 pSequence->nRefCount = 1;
123 pSequence->nElements = nSize;
124 }
125
126 *ppSequence = pSequence;
127 }
128
129 //==================================================================================================
rtl_byte_sequence_acquire(sal_Sequence * pSequence)130 void SAL_CALL rtl_byte_sequence_acquire( sal_Sequence *pSequence )
131 {
132 OSL_ASSERT( pSequence );
133 osl_incrementInterlockedCount( &(pSequence->nRefCount) );
134 }
135
136 //==================================================================================================
rtl_byte_sequence_release(sal_Sequence * pSequence)137 void SAL_CALL rtl_byte_sequence_release( sal_Sequence *pSequence )
138 {
139 if ( pSequence != NULL )
140 {
141 if (! osl_decrementInterlockedCount( &(pSequence->nRefCount )) )
142 {
143 rtl_freeMemory( pSequence );
144 }
145 }
146 }
147
148 //==================================================================================================
rtl_byte_sequence_construct(sal_Sequence ** ppSequence,sal_Int32 nLength)149 void SAL_CALL rtl_byte_sequence_construct( sal_Sequence **ppSequence , sal_Int32 nLength )
150 {
151 OSL_ASSERT( ppSequence );
152 if( *ppSequence )
153 {
154 rtl_byte_sequence_release( *ppSequence );
155 *ppSequence = NULL;
156 }
157
158 if( nLength )
159 {
160 *ppSequence = (sal_Sequence *) rtl_allocateZeroMemory( SAL_SEQUENCE_HEADER_SIZE + nLength );
161
162 if ( *ppSequence != NULL )
163 {
164 (*ppSequence)->nRefCount = 1;
165 (*ppSequence)->nElements = nLength;
166 }
167 }
168 else
169 {
170 *ppSequence = &aEmpty_rtl_ByteSeq;
171 rtl_byte_sequence_acquire( *ppSequence );
172 }
173 }
174
175 //==================================================================================================
rtl_byte_sequence_constructNoDefault(sal_Sequence ** ppSequence,sal_Int32 nLength)176 void SAL_CALL rtl_byte_sequence_constructNoDefault( sal_Sequence **ppSequence , sal_Int32 nLength )
177 {
178 OSL_ASSERT( ppSequence );
179 if( *ppSequence )
180 {
181 rtl_byte_sequence_release( *ppSequence );
182 *ppSequence = NULL;
183 }
184
185 *ppSequence = (sal_Sequence *) rtl_allocateMemory( SAL_SEQUENCE_HEADER_SIZE + nLength );
186
187 if ( *ppSequence != NULL )
188 {
189 (*ppSequence)->nRefCount = 1;
190 (*ppSequence)->nElements = nLength;
191 }
192 }
193
194 //==================================================================================================
rtl_byte_sequence_constructFromArray(sal_Sequence ** ppSequence,const sal_Int8 * pData,sal_Int32 nLength)195 void SAL_CALL rtl_byte_sequence_constructFromArray(
196 sal_Sequence **ppSequence, const sal_Int8 *pData , sal_Int32 nLength )
197 {
198 rtl_byte_sequence_constructNoDefault( ppSequence , nLength );
199 if ( *ppSequence != NULL )
200 rtl_copyMemory( (*ppSequence)->elements, pData, nLength );
201 }
202
203 //==================================================================================================
rtl_byte_sequence_assign(sal_Sequence ** ppSequence,sal_Sequence * pSequence)204 void SAL_CALL rtl_byte_sequence_assign( sal_Sequence **ppSequence , sal_Sequence *pSequence )
205 {
206 if ( *ppSequence != pSequence)
207 {
208 if( *ppSequence )
209 {
210 rtl_byte_sequence_release( *ppSequence );
211 }
212 *ppSequence = pSequence;
213 rtl_byte_sequence_acquire( *ppSequence );
214 }
215 // else
216 // nothing to do
217
218 }
219
220 //==================================================================================================
rtl_byte_sequence_equals(sal_Sequence * pSequence1,sal_Sequence * pSequence2)221 sal_Bool SAL_CALL rtl_byte_sequence_equals( sal_Sequence *pSequence1 , sal_Sequence *pSequence2 )
222 {
223 OSL_ASSERT( pSequence1 );
224 OSL_ASSERT( pSequence2 );
225 if (pSequence1 == pSequence2)
226 {
227 return sal_True;
228 }
229 if (pSequence1->nElements != pSequence2->nElements)
230 {
231 return sal_False;
232 }
233 return (sal_Bool)
234 (rtl_compareMemory(
235 pSequence1->elements, pSequence2->elements, pSequence1->nElements )
236 == 0);
237 }
238
239
240 //==================================================================================================
rtl_byte_sequence_getConstArray(sal_Sequence * pSequence)241 const sal_Int8 *SAL_CALL rtl_byte_sequence_getConstArray( sal_Sequence *pSequence )
242 {
243 return ((const sal_Int8*)(pSequence->elements));
244 }
245
246 //==================================================================================================
rtl_byte_sequence_getLength(sal_Sequence * pSequence)247 sal_Int32 SAL_CALL rtl_byte_sequence_getLength( sal_Sequence *pSequence )
248 {
249 return pSequence->nElements;
250 }
251